SIRIUS, interface module DP interface, for modular safety system 3RK3 PROFIBUS-DP interface 12 Mbit/s, RS 485 45 mm width screw connection parameterizable via Safety ES without connecting cable SIRIUS 3RK3 interface module for connecting the 3SK2 safety relays via PROFIBUS. No special programming cable is required with the interface module, as parameterization and diagnostics can also be carried out via PROFIBUS. The 3RK35 interface modules can be used for the connection via PROFIBUS, and the 3SK25 modules for PROFINET. Both are available with screw and spring-loaded connections. The 3UF7930-0AA00-0 connecting cable to the basic device must be ordered separately. Safety is a SIRIUS business.